Axial branded SCX10 and the Wraith are considered scale by most. Axial branded AX-10 and XR-10 are not, they are considered Competition trucks. A easy way to determine if a truck would be considered scale are not is look at the frame of the truck. One example is of the honcho in this link.
http://www.axialracing.com/ftp/scx10_honcho/index.html See how it has 2 main frame rails like a normal 1:1. The Wraith's frame work would be considered scale to a Off Road buggy. The frame works of the competition type trucks have TVP chassis'. Twin Vertical Plates like in this picture,
Noting realistic about it. Tamiya also makes kits that are considered scale like but their kits tend to be more expensive and not as capable as axial kits I have used and seen.
http://www.tamiyausa.com/product/item.php?product-id=58469 Hope this helps out some.